Method for producing hydrogen, carbon monoxide, and carbon from methane-containing feedstock

EP4470663A3Pending Publication Date: 2025-03-19SK INNOVATION CO LTD
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Patent Information

Application Number
EP2024207745
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-05-02
Filing Date
2023-09-19
Publication Date
2025-03-19

AI Technical Summary

Technical Problem

Conventional methods for producing hydrogen and carbon from methane face challenges such as high energy input requirements, CO2 emission, and operational difficulties in fluidized-bed reactors when using iron-based catalysts, particularly in maintaining continuous operation and achieving high value-added product yields.

Method used

A method utilizing a rotary kiln-type reactor for pyrolysis of methane with an iron oxide-containing catalyst, where a gas-solid separation process produces high-purity hydrogen, carbon monoxide, and carbon, with adjustable molar ratios and optimized reactor configurations to enhance efficiency and continuous operation.

Benefits of technology

This method efficiently produces high-purity hydrogen, carbon monoxide, and carbon without generating CO2, while overcoming operational challenges of fluidized-bed reactors, enabling continuous and cost-effective production of high value-added materials.

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Abstract

The present invention relates to a single process for producing hydrogen, carbon monoxide, and carbon from methane by forming gas products comprising hydrogen and carbon monoxide, and solid products comprising carbon and an iron-based catalyst from methane in a methane-containing feedstock through pyrolysis route involving auto-thermal reduction in a rotary kiln-type reactor in the presence of an iron-based catalyst and separating and recovering respective products.
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